Don't claim RoundeBitmapDisplayer creates bitmaps

This seems to be untrue with the current implementation.
Universal image gradle stuff
Delete build.gradle
add originalImageUri to image decoding info
add function to retrieve original uri
Readme: apps, alternatives
Merge pull request #580 from KeepSafe/add-original-uri

Add original image URI to ImageDecodingInfo
Clean code
Merge pull request #577 from technicalcycling/master

Java docs: Don't claim RoundeBitmapDisplayer creates bitmaps
Merge commit '29811229c3ba3da390b29353875be2c92f88a789'